Plug adaptor



FIG. 1 is a perspective view of a plug adaptor.

FIG. 2 is a front elevational view of the plug adaptor.

FIG. 3 is a rear elevational view of the plug adaptor.

FIG. 4 is a top plan view of the plug adaptor.

FIG. 5 is a bottom plan view of the plug adaptor

FIG. 6 is a left side elevational view of the plug adaptor; and,

FIG. 7 is a right side elevational view of the plug adaptor. 

CLAIM The ornamental design for a plug adaptor, as shown and described. 